These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 0.96 s (backtrack: 0/20).

[ebuild  N     ] dev-libs/tomsfastmath-0.13.1-r1:0/1::gentoo  316 KiB

Total: 1 package (1 new), Size of downloads: 316 KiB